Improvement in railroad-car ventilators



.tanden tatza I JOHN-M. DEXTER, OEE'LMIEA NEW YORK.

Letters Patent No. 110,966, dated January 10, 1871..

IMPROVEMENT IN RAILROAD-CAR VENTlLATORS.

The Schedule referred 4to in these Letters Patentvand making part ofthe same.

I, J OIN M. DEXTER, of the cityof Elmira, in tlic l had to the annexed drawing making part of this-specitication, in which.

Figure 1 is a front elevation.

Figure 2 is a vertical transverse section.

Figure 3 isa front elevation, showing a slight modification in the construction of the window.

The same letters are used in all theligures in the designation of identical parts. 4

The object of this invention is to provide railway passenger-cars, in addition to the ordinary glass windows, with supplemental windows, which may take the placeof the ordinary blinds, and shall afford good ventilation; but, at the-same time, exclude ciuders and dust, so that persons can have pure air without inconvenience to themselves and others in adjacent rear seats.

The improvement -consists in a window-sash, con-- taining in the center a small pane of glass, to adord a look-ont, and having the space between this pane of .glass and the bars ofthe sash covered with vone or more leaves of fine wire-cloth. To enable others skilled in the art to make an use my invention,I will proceed to describe its construction and operation.

` lhe sash A ofrny supplemental window is ttted in the Acar window-frame in a manner similar to theordinary. window-sash' B, so that it may be raised and lowered like the latter. l It may be arranged either upon the inside or the outside of thesash B, as preferred.

Asrnall-frame, C, of any desired shape, is inserted in the central portion of the sash A, held in place by braces a a, which connect it rigidly to the .bars of the latter.

This 'frame is closed by a p'an'e of glass, C', which, where no blind is connected with it, as shown iu fig. 1, should be colored, to exclude the suns rays..

The space between the frame C and the bars of the sash A" is covered by wire-clothfD, which may be secured in ,any preferred manner. Ordinarily, two leaves of this cloth, 'which must be suliiciently ne to exclude ciuders andvdust, are empio ed one upon the Ainside and another upon the ,outsi e of the sash, as

clearly shown in lig. 2. For theV inner leaf I. sometimes snbstitnte aVscroll-Work of wood, as shown in tig. 3, to give the window a more ornamental appearance.' I

A blind, E, is also sometimes, arranged inways on the sash A to cover the pane G' when ordinary window-glass is. used for it.

What I claim as -my'inventioin and desire to secure byLettersPatent, is Y i A Ventilating' car-window, composed of .a sash, A,

wire-cloth screen` D, or its equivalent, and pane of glass C', substantially as set forth.

JNO. M. DEXTER.

DAVID `lirnnoEE. y 

